If I may add my two cents and potentially make it more difficult here it comes :
I’ve shot an OG x100, sold it for a xt1 with primes / zooms and shoot a 50r for work (architecture).
The files of the 50r are incredible compared to the xt1, but that is also older tech. I love the 4:3 ratio for portrait orientation (verticals). And the very long ratio (forgot what it precisely is) for landscapes. I would love to only have to edit 50r’s files, it’s a treat (DR, resolution, sharpness of lenses, colors, …).
But when it comes to shooting … I see it more as a high quality tool that I mount on a tripod and that gets me the results I need and more. But I don’t particularly enjoy shooting it except for zooming a 100% on shots I just took to be amazed by the details I get out of it (that didn’t really get old yet).
Going for a family hike or travel I’d much rather have my x kit with me, with all the small primes rather than the 50r’s big chunky zoom or TS primes.
My dream photo kit ?
x100v + a gfx (100?) with a bunch of lenses.
If I could have only one camera ?
An X series or a full frame mirrorless with a bunch of lenses.